Friedrich stolzenberg



(No Model.) Y

F. STOLZENBERG.

TURRBT HEAD.

lmemedlv Dec. 1s, 1892..

W/T/VESSES.'

CCM

Ummm 'STATES PATENT Gwinn.

FRIEDRICH STOLZENBERG, OF BERLIN, GERMANY.

TuRRET-HEAD.

SPECIFICATION forming part of Letters Patent No. 488,152, dated December 13, 1892.

Serial No. 436,155. (No model.)

To all whom, it may concern:

Be it known thatI, FRIEDRICH STOLZEN- BERG, acitizen of the Kingdom of Prussia, residing at Berlin, in the Empire of Germany, have invented new and useful Improvements in Turret-Heads, of which the following is a specification.

The turret-heads or multiple tool-stocks at present in use are very complicated in their construction, and hence very expensive.

The object of my invention is a turret-head of a novel and comparatively-simple construction, as pointed outin the following specification and claims, and illustrated in the accompanying drawings, in which- Figure l represents a vertical section in the plane w as, Fig. 3. Fig. 2 is a similar section in the plane y y, Fig. 3. Fig. 3 is a plan or top view. Fig. lis a transverse vertical section in the plane z z', Fig. 2. Fig. 5 is ahorizontal section in the plane u u, Fig. 2. Figs. 6 to 13 are details which will be referred to as the description progresses.

My turret-head consists of three principal parts: First, the base ct, which is secured on the bed of the machine on which the turrethead is to be used; second, the movable carriage b, which is moved by the spindle of a tail-stock 3 third, the tool-stock proper c, which when the carriage b is moved backward turns on its vertical axis until the tool when the carriage moves forward occupies a position corresponding to the middle of theworking spindle.

The fixation or act of xing the tool-stock in position after the same has been turned, as above stated, is accomplished by the following means: The tool-stock c is mounted in the carriage b by means of a hollow spindle d, which is provided with two slots m m, ex tending in opposite directions, in which the lugs f of a pin tcan move. The pin tis provided with afoot g and it is movably fitted into the hollow spindle (l. Aspring which is placed in the interior of said hollow spindle has a tendency to force the pin t downward. The lower end of the hollow spindle d is fitted into a washer t', which is provided with a series of recesses s (see Fig. 6) and which, together with the lower end of the hollow spindle, can move back and forth in the base a;

I but the washer lits into a recess a in the base a so that it cannot turn around, and if the tool-stock is thrown in engagement with this washer it is also prevented from turning. Beneath the washer 1I is situated the feedwheel 7c, which is connected with the toolstock c by means of the spindle d. In the middle of the tool-stock c and beneath the foot g of the pin tis situated a support h with an uneven surface, Figs. l, 2, 9, l0, ll, v and l2, which is fitted into the base aand eX- tends in the direction of the length of the carriage Z9.

In order to impart t0 the carriage b the required movement, which is to be imparted by means of a tail-stock spindle, said carriage is provided with a coupling device for the spinment with the recesses s of the washer z', (best seen in Fig. 12,) so that the tool-stock cannot turn around. When the carriage bis then moved backward, the foot gof the pin tpasses upon the high portion of the support h and the lugsf are raised out of engagement with the recesses s of the washer t', so as to allow the tool-stock c to turn round, and one of the teeth of the feed-Wheel la is brought in contact with a tappet l', which projects from a lever l, Figs. 2 and 7, so that when the backward movement of the carriage b is continued and while the foot g of the pin t travels from the position shown in Figs. 2 and 9 to that shown in Fig. 13 the feed-wheel k imparts to the tool-stock c a rotary movement. Vhen the carriage b is then moved forward, so as to throw the foot g of the pint upon the low portion of the support h, the lugs f are thrown in engagement with the recesses s in the washer and the tool-stocke is automatically locked in position. The lever Z extends from a pivot p, which turns loosely in a holein the base a (see Fig. 2) and which is retained in position by a spring-bolt o.

What I claim as new, and desire to secure by Letters Patent, is

IOS

1. The combination, with -thecarriage h, the multiple tool-stock c, fastened to the carriage, and means for imparting to the carriage areciprocating motion, of a rotatable hollow spindle d, carrying the tool-stock, a spring-actuated pin 25, fitted into the hollow spindle and provided with lugs which extend through slots in said spindle, a washer t', provided with recesses s and fitted into the base a, so as to be prevented from turning, an uneven support h for the foot of the pin t, a feedwheel lo, and a tappet l', substantially as shown and described.

8. The combination, with a base a and a rotatable tool-stock c, connected with the I5 FRIEDRICH STOLZENBERG.

Witnesses:

L. PoRToUs, E. WoLFF. 

